Safe.



UNITED sTATEs PATENT oEarcE.-

WILBER E. ARNOLD, OF MADISONVILLE, OHIO, ASSIGNOR TO VICTOR SAFE & LOCKCOMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

SAFE.

Specification of Letters Patent.

Patented Aug. 4, 1908.

To all whom it may concern. i v

Be it known that I, WILBER E. ARNOLD, a citizen of the United States,and residing at Madisonville, I-Iamilton county, State of Ohio, haveinvented certain new and useful Improvements in Safes ,and I do declarethe following to be a clear, full, and eXact description of theinvention, attention being called to the accompanying drawing, with thereference characters marked thereon, which forms also a art of thisspecification.

This invention re ates toim rovements in the construction of safes, theody of which consistsof a'casting of a non-machineable metal andcontains also metal which may be worked by machine-tools.Non-machineable metal is used in order to render such safes secureagainst attacks by implements which may be used to remove or penetratethe metal. Machineable metal must be used for such parts whereby thedoor is kept seated in its opening. This is because the complementaryparts of safe-door and safe-body which engage each other at that timemust be adjusted and tightly fitted to each other, which requiresworking by tools.

My invention concerns that part of the means whereby the door is keptseated when closed, which is providedl on the safe-body and is comlementary to a corresponding vpart on the oor, both complementary partsof these means being so fitted that one may receive and engage theother. As shown and described my invention is applied to conditionswhere a screw-connection is involved in the engagement of thecomplementary parts of these means and of which connection the malescrew is provided on the door, while the female screw is provided on thesafe-body and back of the j amb within the opening there in whichreceives the door. These screwparts in order to be fitted for properengagement of their threads, must be worked `by machine-tools, and topermit such Working,

they must accordingly be made out of metal suitable for the purpose.'

My present invention concerns the means and manner for holding theworkable metal in place which is intended to form that one of thecomplementary screw-parts which is provided on the safe-body.

In the following specification and particustruction, which. latter isalso illustrated in the accompanying drawin in which:-

Figure 1, shows a side-e evation of a safe, parts of it being removed ona sectional line which passes centrally through the dooropening. Fig. 2,shows a side-view of the detached door which is fitted to this lo ening.Fig. 3, is a cross-section of the sa' -body taken on line 3 3, of Fig.1, and shows the inner side of the front-wall of the safe-body with thedoor-opening therein. Fig. 4, shows theworkable metal-portion providedon the non-workable casting of the safe-body.

The body of the safe is cast of a suitable metal which is of such anature as to be secure against attacks involving the use of drills orother tools for working metal. It is formed with a substantiallycylindrical sidewall A, a closed back-wall B, and the frontwall C, whichhas the door-opening c. The thickness of this front-wall around theopening may be increased inwardly as shown, to form, if necessary, amore'eXtended j amb D, against which the door E, is seated. p

F, F, are the complementary parts of the hinges which are provided onthe safe-body. Means are provided whereby this door when closed is keptseated in its j amb and as before stated these means consist of twocomplementary parts, provided, one on the door and the other on thesafe-body, a screw-connection bein y used whereby these two parts becomea a ted to engage each other. Of these comp ementary parts, part G, isthe one provided on the door and constitutes the male-screw of thescrew-connection. Its

thread is fitted to engage a female thread h, contained in a ring H,bac'k of the door-'amb and on the inner side of front-wall C. oththreads must be cut to fit each other, which is done by machine-tools,and requires therefore metal workable in such manner. Accordingly theparts in which these threads are cut consist of a metal which isdifferent from the other metal, but connected thereto and combined withit in a manner so as to form inseparable arts thereof. As to the door,the details o' construction and connection of this part Gr form no partof this invention. Nor is it important for present purposes whetherthese threads are cut in this metal before, or after its connection tothe other metal.

As to the body, ring H, which contains threads h, is made of a metalsuitable for working by machine-tools and is held in position byvportions of the cast-metal which vengage the same, the engagement beingobtained by placing this ring into the mold in which the casting of thisbody is made.

In some of my former patents related to similar subject matter, notablyin one issued to me on August 12th, 1902, I show such a ring as beingheld in place by being embedded around its entire outside into thecast-metal. While this method is entirely satisfactory for the purposeof holding the ring in place, the production of such a composite castingin this manner is connected with difliculties which result frequently inloss of castings. This is by reason of undue strains set up in thecontacting metals and of the diijliculty in accommodation of one to theother, of the cast-metal while cooling and shrinking and of the rigidring which is entirely surrounded thereby. This difficulty I overcome bylimiting the contact between the two metals, so that the movement of onemetal with respect to the other, particularly that of the castmetal whenshrinking during cooling, is not interfered with or opposed by theother. For such purpose I provide for a limited contact only betweenthis ring H, and the cast metal of the safe-body, such contact beingcomplete only on one side of the ring, viz. its frontside. The ring maythus readily move rearwardly or laterally, or yield to the shrinkingstrains of the cooling cast-metal, and this latter may readily adjustitself to the ring, so that no opposing strains are set up between thetwo metals. The ring is held in place by the limited contact ofinternal, spaced projections P, which extend from the inside of thesafe-body and engage the ring in a manner to hold the same against theinside of the front-wall. By preference these projections are arrangedat an angle to wall A, from which they extend towards the front-wall, sothat ring H, is simultaneously engaged in an axial as well as in aradial direction. The pe- A riphery of ring H, which is engaged by theseprojections is beveled so as to meet themat proper angle as best shownin Fig. l. These projections are preferably in form of ribs, that isthey are entirely free between their ends so as to limit contact withring H, only to these ends and to avoid accumulation of metal in lumps.This reduces corres ondingly the movement which takes lace c uringshrinking and thereby reduces albo the danger of cracking, whilecooling. A more intimate combination between the two metals is obtainedby providing notches p, in the outside of ring H, into which part of thecastmetal of these ribs may run during the act of casting.

Having described my invention, I claim as new:

1. In a composite safe-structure, the coinbination of a safe-body of11n-machincable metal having a door-opening in its front-w all adaptedto receive a door, and spaced integral projections on its inside whichextend at an angle towards the front-wall, and a ring of machineablemetal provided with means for engaging similar means on the door to holdthe same seated and located between said front-wall and the free ends ofthese projections and held in position by them.

2. In a composite safe-structure, the coinbination of a safe-body ofiin-machineable metal provided witha door-opening in its front-walladapted to receive a door, a flat ring of machineable metal fittedagainst the inner side of the front-wall to surround the door-openingthereat, contact of the ring with said side of the front safe wall beinglimited to its flat front face only, the inside of the safe-body beingprovided with spaced projections which engage the ring` on its peripheryto hold the same in position.

3. In a composite safe-structure, the combination of a safe-body ofuli-machincable metal embodying inclosing walls and provided with adoor-opening in its front-wall, a ring of machineable metal limited. inits contact with the metal of the safe-body to its iat front side atwhich it contacts with the inside of the front-wall and the opening inwhich latter it surrounds, its exposed peripheral outer side beingprovided with spaced notches, there being also spaced projections whichextend from the inner surface of the safe-body and engage the ring onits exposed outside, the metal thereof extending also into the notchesof this ring.

4. In a composite safe-strueture, the coni bination of a safe-body ofunanachineable metal embodying inelosing walls, the frontwall having acircular door-opening, a ring of machineable metal placed with itsouter, flat side against the inner side of the front wall so as to beconcentric with the opening therein and projecting to the extent of itsthickness clear into the safe, and spaced projections cxtending from theinner surface of the safebody, which engage said ring to hold it inposition against the inside of the front-wall of the safe.

5. In a composite safe-structure, the coinbination of a safe-body of11n-machineable metal embodying inclosing walls, the frontwall having acircular door-opening, a ring of machineable metal beveled on 'itsperiphery and placed with its flat side against the inner side of thefront-wall of the safe so as to be concentric with the opening thereinand pro* jeoting inwardly from said front-Well to the vextent of itsthickness, and ribs projecting from the inner surface oiL the safe-bodyand engaging With their ends the beveled periphery of the ring to holdthe same in ositlon aginst the inner side of the iront-WaJ of the sa e.f

WILBER E. ARNOLD.

Witnesses:

C. SPENGEL, T. LE BEAU.

